2,3-Butanediol ek choti diol hai jo cosmetics mein humectant aur solvent ke roop mein kaam karta hai. Yeh skin ka moisture retain karne mein madad karta hai aur dusre ingredients ko dissolve karne mein bhi helpful hota hai. Iska mild antimicrobial properties bhi hota hai jo product ko preserve rakhne mein support karta hai.